Marek is a boss of a fruit company and he sometimes has
crazy ideas. He wants to introduce a new product – fruit
baskets. They will contain all possible combinations of fruits
to satisfy different customer needs, but at most one piece of
each fruit. He doesn’t want to have small fruit baskets, so all
must contain at least 200 grams of fruit.
You have tolerated his crazy ideas before, but you can’t put
up with this one. You realized that the company might end up
with $2^ N1$ different
baskets, where $N$ is the
number of fruits the company sells. You know that Keram will
not understand this argument, so you are going to convince him
in a different way. You want to tell him the total weight of
fruit in the baskets and tell him that he will need a lot of
trucks just to carry all baskets from the collection.
For simplicity, you may assume that all fruits of the same
kind weigh the same. You also know that all fruits weigh at
least 50 grams.
Input
The first line of input contains an integer $N, 1\leq N\leq 40$. The second line
contains $N$ integers –
weights of available fruits in grams. All weights are integers
between 50 and 1000.
Output
Output one line with one integer – the total weight of all
fruit in the baskets that have at least 200 grams of fruit.
Sample Input 1 
Sample Output 1 
4
50 60 70 120

1020
